{"id":4571,"date":"2026-10-16T18:53:42","date_gmt":"2026-10-16T18:53:42","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=4571"},"modified":"2026-10-16T18:53:44","modified_gmt":"2026-10-16T18:53:44","slug":"8-awg-ampacity","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/vi\/blog\/8-awg-ampacity\/","title":{"rendered":"D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c 8 AWG: T\u1ea1i sao c\u1ea3 40 A v\u00e0 50 A \u0111\u1ec1u l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang"},"content":{"rendered":"<p>N\u1ebfu b\u1ea1n t\u00ecm ki\u1ebfm ampacity d\u00e2y 8 AWG tr\u00ean internet, b\u1ea1n th\u01b0\u1eddng s\u1ebd th\u1ea5y c\u00e1c c\u00e2u tr\u1ea3 l\u1eddi nh\u01b0 40, 50 ho\u1eb7c 55 ampe. Nh\u1eefng tuy\u00ean b\u1ed1 n\u00e0y ph\u00f9 h\u1ee3p v\u00ec m\u1ecdi ng\u01b0\u1eddi tham kh\u1ea3o c\u00f9ng m\u1ed9t b\u1ea3ng v\u00e0 hi\u1ec3u \u0111\u00fang. S\u1ef1 kh\u00e1c bi\u1ec7t n\u1eb1m \u1edf c\u00e1c kh\u00eda c\u1ea1nh kh\u00e1c kh\u00f4ng li\u00ean quan \u0111\u1ebfn \u0111\u1ed3ng nh\u01b0 \u0111\u1ecbnh m\u1ee9c c\u00e1ch \u0111i\u1ec7n, \u0111\u1ecbnh m\u1ee9c nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111\u1ea7u n\u1ed1i v\u00e0 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a kh\u00f4ng kh\u00ed t\u1ef1 do.<\/p>\n<blockquote><p>T\u00f3m l\u1ea1i, \u0111\u1ecbnh m\u1ee9c cho \u0111\u1ed3ng c\u1ee1 8 l\u00e0 kho\u1ea3ng 40 A \u1edf 60 \u0111\u1ed9 C, 50 A \u1edf 75 \u0111\u1ed9 C v\u00e0 55 A \u1edf 90 \u0111\u1ed9 C, nh\u01b0 th\u1ec3 hi\u1ec7n trong b\u1ea3ng NEC 310.16. \u0110\u1ecbnh m\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng s\u1ebd l\u00e0 \u0111\u1ecbnh m\u1ee9c th\u1ea5p nh\u1ea5t trong m\u1ea1ch theo quy \u0111\u1ecbnh c\u1ee7a m\u00e3 NEC 110.14(c): v\u00ec trong h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 d\u00e2n d\u1ee5ng, c\u00e1c \u0111\u1ea7u n\u1ed1i v\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 75 \u0111\u1ed9, do \u0111\u00f3 l\u00e0m cho \u0111\u1ed3ng c\u1ee1 8 l\u00e0 d\u00e2y d\u1eabn 50 A trong \u1ed1ng d\u1eabn. B\u1ea5t k\u1ef3 d\u00e2y n\u00e0o ch\u1ea1y trong \u1ed1ng NM-B (Romex) s\u1ebd l\u00e0m \u0111\u1ecbnh m\u1ee9c gi\u1ea3m xu\u1ed1ng c\u1ed9t 60 \u0111\u1ed9, do \u0111\u00f3 l\u00e0m cho n\u00f3 l\u00e0 d\u00e2y d\u1eabn 40 A.<\/p><\/blockquote>\n<h2>8 AWG th\u1ef1c s\u1ef1 l\u00e0 g\u00ec<\/h2>\n<p>American Wire Gauge l\u00e0 ng\u01b0\u1ee3c l\u1ea1i; s\u1ed1 c\u00e0ng nh\u1ecf, d\u00e2y c\u00e0ng l\u1edbn. 8 AWG n\u1eb1m \u1edf gi\u1eefa ph\u1ea1m vi nh\u00e0 \u1edf, tr\u00ean 14, 12 v\u00e0 10 AWG \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c m\u1ea1ch nh\u00e1nh th\u00f4ng th\u01b0\u1eddng, nh\u01b0ng d\u01b0\u1edbi 6 v\u00e0 4 AWG \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c feeder l\u1edbn h\u01a1n v\u00e0 c\u1eeda v\u00e0o d\u1ecbch v\u1ee5.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Thu\u1ed9c t\u00ednh<\/th>\n<th>\u0110\u1ed3ng<\/th>\n<th>Nh\u00f4m<\/th>\n<\/tr>\n<tr>\n<td>\u0110\u01b0\u1eddng k\u00ednh d\u00e2y d\u1eabn<\/td>\n<td>0,1285 in (3,264 mm)<\/td>\n<td>0,1285 in (3,264 mm)<\/td>\n<\/tr>\n<tr>\n<td>Di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang<\/td>\n<td>16,51 kcmil (8,37 mm\u00b2)<\/td>\n<td>16,51 kcmil (8,37 mm\u00b2)<\/td>\n<\/tr>\n<tr>\n<td>\u0110i\u1ec7n tr\u1edf DC \u1edf 75\u00a0\u00b0C<\/td>\n<td>0,628 \u03a9 tr\u00ean 1.000 ft<\/td>\n<td>1,03 \u03a9 tr\u00ean 1.000 ft<\/td>\n<\/tr>\n<tr>\n<td>Tr\u1ecdng l\u01b0\u1ee3ng tr\u00ean 1.000 ft<\/td>\n<td>Kho\u1ea3ng 50 lb<\/td>\n<td>Kho\u1ea3ng 15 lb<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1c lo\u1ea1i ph\u1ed5 bi\u1ebfn<\/td>\n<td>THHN, THWN-2, XHHW-2, NM-B, MC, UF-B<\/td>\n<td>XHHW-2, USE-2, SER<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>M\u1eb7c d\u00f9 c\u1ea3 hai kim lo\u1ea1i c\u00f3 c\u00f9ng k\u00edch th\u01b0\u1edbc, ch\u00fang ho\u1ea1t \u0111\u1ed9ng r\u1ea5t kh\u00e1c nhau. Nh\u00f4m c\u00f3 ampacity th\u1ea5p h\u01a1n kho\u1ea3ng 20% so v\u1edbi c\u00f9ng c\u1ee1 d\u00e2y b\u1eb1ng \u0111\u1ed3ng. \u0110i\u1ec1u n\u00e0y l\u00e0 do \u0111i\u1ec7n tr\u1edf c\u1ee7a n\u00f3 cao h\u01a1n kho\u1ea3ng 65% so v\u1edbi \u0111i\u1ec7n tr\u1edf c\u1ee7a \u0111\u1ed3ng. K\u1ebft qu\u1ea3 l\u00e0 h\u01b0\u1edbng d\u1eabn ng\u00e0nh cho nh\u00f4m cho r\u1eb1ng n\u00f3 th\u01b0\u1eddng ch\u1ea1y nh\u1ecf h\u01a1n hai c\u1ee1 so v\u1edbi \u0111\u1ed3ng. \u0110\u1ed1i v\u1edbi c\u00e1c \u0111o\u1ea1n d\u00e2y d\u00e0i, s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111i\u1ec7n tr\u1edf th\u1ec3 hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng s\u1ee5t \u00e1p tr\u01b0\u1edbc khi \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n nhi\u1ec7t.<\/p>\n<p>L\u1ef1a ch\u1ecdn gi\u1eefa hai lo\u1ea1i th\u01b0\u1eddng mang t\u00ednh kinh t\u1ebf h\u01a1n l\u00e0 k\u1ef9 thu\u1eadt, v\u00e0 n\u00f3 c\u00f3 l\u1ecbch s\u1eed l\u00e2u d\u00e0i c\u1ea3 \u1edf ph\u00eda ti\u1ec7n \u00edch v\u00e0 ph\u00eda m\u1ea1ch nh\u00e1nh c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t \u2014 l\u00fd do \u0111\u1eb1ng sau \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y trong gi\u1ea3i th\u00edch n\u00e0y v\u1ec1 <a href=\"https:\/\/huyuglobal.com\/vi\/blog\/for-electric-power-transmission-copper-or-aluminium-wire-is-used\/\">l\u00fd do t\u1ea1i sao \u0111\u1ed3ng v\u00e0 nh\u00f4m \u0111\u1ec1u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho truy\u1ec1n t\u1ea3i \u0111i\u1ec7n<\/a>. \u0110\u1ed1i v\u1edbi m\u1ea1ch nh\u00e1nh 40 ho\u1eb7c 50 ampe b\u00ean trong t\u00f2a nh\u00e0, \u0111\u1ed3ng l\u00e0 l\u1ef1a ch\u1ecdn b\u00ecnh th\u01b0\u1eddng; nh\u00f4m xu\u1ea5t hi\u1ec7n ch\u1ee7 y\u1ebfu khi ampacity \u0111\u1ee7 l\u1edbn \u0111\u1ec3 ti\u1ebft ki\u1ec7m tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed v\u01b0\u1ee3t tr\u1ed9i h\u01a1n vi\u1ec7c t\u0103ng c\u1ee1 d\u00e2y.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4574\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/10\/What-8-AWG-Actually-Is.webp\" alt=\"8 AWG th\u1ef1c s\u1ef1 l\u00e0 g\u00ec\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>B\u1ea3ng Ampacity, v\u00e0 T\u1ea1i Sao C\u00f3 Ba C\u1ed9t<\/h2>\n<p>C\u00e1c s\u1ed1 li\u1ec7u \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb B\u1ea3ng NEC 310.16, ch\u1ec9 ra ampacity cho ph\u00e9p c\u1ee7a c\u00e1c d\u00e2y d\u1eabn c\u00e1ch \u0111i\u1ec7n kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 2000 V v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 30 C v\u1edbi kh\u00f4ng qu\u00e1 ba d\u00e2y d\u1eabn mang d\u00f2ng \u0111i\u1ec7n trong m\u1ed9t \u1ed1ng d\u1eabn ho\u1eb7c c\u00e1p.<\/p>\n<table>\n<tbody>\n<tr>\n<th>D\u00e2y d\u1eabn<\/th>\n<th>60\u00a0\u00b0C (140\u00a0\u00b0F)<\/th>\n<th>75\u00a0\u00b0C (167\u00a0\u00b0F)<\/th>\n<th>90\u00a0\u00b0C (194\u00a0\u00b0F)<\/th>\n<\/tr>\n<tr>\n<td>\u0110\u1ed3ng 8 AWG<\/td>\n<td>40 A<\/td>\n<td>50 A<\/td>\n<td>55 A<\/td>\n<\/tr>\n<tr>\n<td>Nh\u00f4m 8 AWG<\/td>\n<td>30 A<\/td>\n<td>40 A<\/td>\n<td>45 A<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed3ng 6 AWG (\u0111\u1ec3 so s\u00e1nh)<\/td>\n<td>55 A<\/td>\n<td>65 A<\/td>\n<td>75 A<\/td>\n<\/tr>\n<tr>\n<td>Nh\u00f4m 6 AWG (\u0111\u1ec3 so s\u00e1nh)<\/td>\n<td>40 A<\/td>\n<td>50 A<\/td>\n<td>55 A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>C\u00e1c c\u1ed9t l\u00e0 c\u1ea7n thi\u1ebft v\u00ec c\u00e1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u1edbi c\u00e1c \u0111\u1ecbnh m\u1ee9c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau, v\u00e0 d\u00e2y d\u1eabn c\u00f3 th\u1ec3 mang d\u00f2ng \u0111i\u1ec7n l\u1edbn h\u01a1n tr\u01b0\u1edbc khi qu\u00e1 nhi\u1ec7t nh\u1edd c\u00e1ch \u0111i\u1ec7n c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 d\u1ef1 ki\u1ebfn.<\/p>\n<ul>\n<li>C\u00e1ch \u0111i\u1ec7n 60 \u00b0C: TW, UF. C\u00f4ng ngh\u1ec7 c\u0169, gi\u1edbi h\u1ea1n th\u1ea5p h\u01a1n.<\/li>\n<li>C\u00e1ch \u0111i\u1ec7n 75 \u00b0C: THW, THWN, XHHW, USE. \u1ed0ng d\u1eabn th\u01b0\u1eddng, v\u1ecb tr\u00ed \u1ea9m \u01b0\u1edbt trong c\u00e1c \u1ee9ng d\u1ee5ng th\u01b0\u01a1ng m\u1ea1i.<\/li>\n<li>C\u00e1ch \u0111i\u1ec7n 90 \u00b0C: THHN, THWN-2, XHHW-2, USE-2, d\u00e2y PV. V\u1ecb tr\u00ed kh\u00f4 v\u00e0 \u1ea9m c\u00f9ng v\u1edbi \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c nhi\u1ec7t \u0111\u1ed9 cao.<\/li>\n<\/ul>\n<p>M\u1ed9t \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd v\u1ec1 90 \u00b0C l\u00e0 n\u00f3 th\u01b0\u1eddng g\u00e2y nh\u1ea7m l\u1eabn khi x\u1eed l\u00fd d\u00e2y c\u00f3 k\u00edch th\u01b0\u1edbc \u0111\u00f3 v\u00ec c\u1ed9t 90 \u00b0C l\u00e0 c\u01a1 s\u1edf gi\u1ea3m \u0111\u1ecbnh m\u1ee9c ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u1ecbnh m\u1ee9c n\u00ean d\u00f9ng cho \u0111\u1ea7u n\u1ed1i. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1ch nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng v\u00e0 b\u00f3 d\u00e2y d\u1eabn \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh to\u00e1n, v\u00e0 ch\u1ec9 sau \u0111\u00f3 m\u1edbi c\u00f3 th\u1ec3 ki\u1ec3m tra v\u1edbi c\u1ed9t nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 d\u00f9ng cho c\u00e1c \u0111\u1ea7u n\u1ed1i c\u1ee5 th\u1ec3. 55 A kh\u00f4ng th\u1ec3 d\u00f9ng l\u00e0m s\u1ed1 d\u1eabn xu\u1ea5t cho \u0111\u1ed3ng 8 AWG v\u00ec vi ph\u1ea1m quy chu\u1ea9n. C\u00e1ch x\u00e1c \u0111\u1ecbnh ampacity ho\u1ea1t \u0111\u1ed9ng t\u1eebng b\u01b0\u1edbc, bao g\u1ed3m c\u00e1c h\u1ec7 s\u1ed1 hi\u1ec7u ch\u1ec9nh v\u00e0 \u0111i\u1ec1u ch\u1ec9nh, \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y trong h\u01b0\u1edbng d\u1eabn n\u00e0y v\u1ec1 <a href=\"https:\/\/huyuglobal.com\/vi\/blog\/minimum-circuit-ampacity\/\">c\u00e1ch thi\u1ebft l\u1eadp ampacity m\u1ea1ch t\u1ed1i thi\u1ec3u<\/a>.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4575\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/10\/wire-ampacity-the-3-columns-the-real-limits.webp\" alt=\"ampacity d\u00e2y 3 c\u1ed9t gi\u1edbi h\u1ea1n th\u1ef1c t\u1ebf\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Quy t\u1eafc \u0110\u1ea7u N\u1ed1i Quy\u1ebft \u0110\u1ecbnh K\u1ebft Qu\u1ea3<\/h2>\n<p>Theo NEC 110.14(C), t\u00f4i ph\u1ea3i ch\u1ecdn ampacity d\u00e2y d\u1eabn d\u1ef1a tr\u00ean \u0111\u1ecbnh m\u1ee9c nhi\u1ec7t \u0111\u1ed9 th\u1ea5p nh\u1ea5t c\u1ee7a b\u1ea5t k\u1ef3 \u0111\u1ea7u n\u1ed1i n\u00e0o, kh\u00f4ng d\u1ef1a tr\u00ean nhi\u1ec7t \u0111\u1ed9 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ed1i \u0111a c\u1ee7a c\u00e1ch \u0111i\u1ec7n d\u00e2y d\u1eabn. N\u00f3i c\u00e1ch kh\u00e1c, y\u1ebfu t\u1ed1 gi\u1edbi h\u1ea1n l\u00e0 c\u00e1c k\u1ebft n\u1ed1i ch\u1ee9 kh\u00f4ng ph\u1ea3i d\u00e2y d\u1eabn.<\/p>\n<p>Trong th\u1ef1c t\u1ebf:<\/p>\n<ul>\n<li>\u0110\u1ea7u n\u1ed1i \u0111\u1ecbnh m\u1ee9c 60 \u00b0C \u2192 n\u00ean d\u00f9ng c\u1ed9t 60 \u00b0C \u2192 \u0111\u1ed3ng 8 AWG = 40 A.<\/li>\n<li>\u0110\u1ea7u n\u1ed1i \u0111\u1ecbnh m\u1ee9c 75 \u00b0C \u2192 n\u00ean d\u00f9ng c\u1ed9t 75 \u00b0C \u2192 \u0111\u1ed3ng 8 AWG = 50 A.<\/li>\n<li>\u0110\u1ea7u n\u1ed1i \u0111\u1ecbnh m\u1ee9c 90 \u00b0C \u2192 n\u00ean d\u00f9ng c\u1ed9t 90 \u00b0C \u2192 \u0111\u1ed3ng 8 AWG = 55 A \u2013 \u0111i\u1ec1u n\u00e0y, trong th\u1ef1c t\u1ebf, h\u1ea7u nh\u01b0 kh\u00f4ng bao gi\u1edd \u00e1p d\u1ee5ng.<\/li>\n<\/ul>\n<p>Thi\u1ebft b\u1ecb \u0111\u1ecbnh m\u1ee9c 100 A ho\u1eb7c h\u01a1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea cho \u0111\u1ea7u n\u1ed1i \u0111\u1ecbnh m\u1ee9c 75 \u00b0C, trong khi thi\u1ebft b\u1ecb d\u01b0\u1edbi 100 A th\u01b0\u1eddng \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea cho \u0111\u1ea7u n\u1ed1i \u0111\u1ecbnh m\u1ee9c 60 \u00b0C; do \u0111\u00f3 ngu\u1ed3n g\u1ed1c c\u1ee7a 40 A. H\u1ea7u h\u1ebft c\u1ea7u dao v\u00e0 \u0111\u1ea7u n\u1ed1i b\u1ea3ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng b\u00e1n t\u1ea1i M\u1ef9 \u0111\u1ec1u c\u00f3 \u0111\u1ecbnh m\u1ee9c 75 \u00b0C, cho ph\u00e9p nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee5 th\u1ec3 v\u1edbi c\u00e1p 8 AWG \u1edf 50 A \u2013 v\u1edbi \u0111i\u1ec1u ki\u1ec7n \u0111\u1ecbnh m\u1ee9c th\u1ef1c t\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra so v\u1edbi nh\u00e3n c\u1ea7u dao, danh m\u1ee5c b\u1ea3ng \u0111i\u1ec7n v\u00e0 b\u1ea3ng t\u00ean thi\u1ebft b\u1ecb.<\/p>\n<p>Con s\u1ed1 40 A th\u1ee9 hai xu\u1ea5t ph\u00e1t t\u1eeb lo\u1ea1i c\u00e1p. NM-B, th\u01b0\u1eddng g\u1ecdi l\u00e0 Romex, l\u00e0 c\u00e1p 60 \u00b0C, ngh\u0129a l\u00e0 d\u00e2y d\u1eabn 8 AWG trong NM-B s\u1ebd g\u00e1n to\u00e0n b\u1ed9 m\u1ea1ch s\u1eed d\u1ee5ng c\u1ed9t th\u1ea5p h\u01a1n ngay c\u1ea3 khi c\u00e1c k\u1ebft n\u1ed1i kh\u00e1c c\u00f3 \u0111\u1ecbnh m\u1ee9c cao h\u01a1n. K\u1ebft qu\u1ea3 l\u00e0, c\u00f9ng k\u00edch th\u01b0\u1edbc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m d\u00e2y d\u1eabn 40 A trong m\u1ed9t \u1ee9ng d\u1ee5ng v\u00e0 50 A trong \u1ee9ng d\u1ee5ng kh\u00e1c ch\u1ec9 c\u00e1ch nhau hai m\u01b0\u01a1i feet.<\/p>\n<p>L\u00fd lu\u1eadn t\u01b0\u01a1ng t\u1ef1 gi\u1ea3i th\u00edch t\u1ea1i sao <a href=\"https:\/\/huyuglobal.com\/vi\/blog\/12-gauge-wire\/\">12 AWG b\u1ecb gi\u1edbi h\u1ea1n \u1edf 20 A<\/a> trong h\u1ea7u h\u1ebft c\u00e1c t\u00ecnh hu\u1ed1ng d\u00e2n d\u1ee5ng m\u1eb7c d\u00f9 d\u00e2y d\u1eabn 12 AWG c\u00e1ch \u0111i\u1ec7n 90 \u00b0C c\u00f3 th\u1ec3 mang 30 A trong b\u1ea3ng. D\u01b0\u1edbi 8 AWG c\u00e1c con s\u1ed1 b\u1ecb kh\u00f3a b\u1edfi quy t\u1eafc d\u00e2y d\u1eabn nh\u1ecf; \u1edf 8 AWG th\u00ec kh\u00f4ng, \u0111i\u1ec1u n\u00e0y l\u00e0m k\u00edch th\u01b0\u1edbc n\u00e0y th\u1ef1c s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o chi ti\u1ebft l\u1eafp \u0111\u1eb7t.<\/p>\n<h2>K\u00edch th\u01b0\u1edbc c\u1ea7u dao: 240.4 v\u00e0 Quy t\u1eafc K\u00edch th\u01b0\u1edbc Ti\u1ebfp Theo<\/h2>\n<p>H\u1ea7u h\u1ebft c\u00e1c h\u01b0\u1edbng d\u1eabn tr\u1ef1c tuy\u1ebfn sai l\u1ec7ch khi n\u00eau nh\u01b0 sau: NEC 240.4(D) kh\u00f4ng \u00e1p d\u1ee5ng cho 8 AWG. Quy t\u1eafc d\u00e2y d\u1eabn nh\u1ecf \u00e1p d\u1ee5ng cho 18, 16, 14, 12 v\u00e0 10 AWG, v\u00e0 quy \u0111\u1ecbnh r\u1eb1ng c\u00f4ng su\u1ea5t t\u1ed1i \u0111a l\u00e0 15 A cho \u0111\u1ed3ng 14 AWG, 20 A cho \u0111\u1ed3ng 12 AWG, v\u00e0 30 A cho \u0111\u1ed3ng 10 AWG. V\u00ec 8 AWG v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n n\u00e0y, quy t\u1eafc trong NEC 240.4 \u00e1p d\u1ee5ng tr\u1ef1c ti\u1ebfp cho n\u00f3, v\u00e0 n\u00f3 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi quy t\u1eafc chung, trong \u0111\u00f3 NEC 240.4(B) cho ph\u00e9p s\u1eed d\u1ee5ng k\u00edch th\u01b0\u1edbc thi\u1ebft b\u1ecb qu\u00e1 d\u00f2ng ti\u00eau chu\u1ea9n ti\u1ebfp theo sau c\u00f4ng su\u1ea5t c\u1ee7a d\u00e2y.<\/p>\n<p>C\u00e1c ph\u00e9p t\u00ednh cho \u0111\u1ed3ng 8 AWG v\u1edbi nhi\u1ec7t \u0111\u1ed9 75 \u00b0C nh\u01b0 sau:<\/p>\n<ul>\n<li>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c: 50 A.<\/li>\n<li>K\u00edch th\u01b0\u1edbc c\u1ee7a c\u1ea7u dao: 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80.<\/li>\n<li>K\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n ti\u1ebfp theo l\u00e0 45 A, sau \u0111\u00f3 l\u00e0 50 A. V\u00ec d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c c\u1ee7a d\u00e2y l\u00e0 50 A, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u1ea7u dao 50 A \u1edf 75 \u00b0C.<\/li>\n<\/ul>\n<p>Tuy nhi\u00ean, c\u00f3 hai h\u1ea1n ch\u1ebf. Th\u1ee9 nh\u1ea5t, v\u00ec NEC 240.4(D) kh\u00f4ng \u0111\u1eb7t gi\u1edbi h\u1ea1n v\u1ec1 k\u00edch th\u01b0\u1edbc d\u00e2y 8 AWG, n\u00ean b\u1ea1n c\u00f3 tr\u00e1ch nhi\u1ec7m duy nh\u1ea5t x\u00e1c nh\u1eadn x\u1ebfp h\u1ea1ng n\u00e0y ho\u1eb7c x\u1ebfp h\u1ea1ng kia cho d\u00f2ng \u0111i\u1ec7n c\u1ee7a c\u1ea7u dao, v\u00ec v\u1eady b\u1ea1n ph\u1ea3i t\u1ef1 tin v\u00e0o ph\u00e9p t\u00ednh c\u1ee7a m\u00ecnh. Ngo\u00e0i ra, NEC 240.4(B) kh\u00f4ng ph\u00f9 h\u1ee3p cho m\u1ea1ch \u0111i\u1ec7n \u0111a \u1ed5 c\u1eafm, n\u00ean c\u1ea7u dao 50 A v\u1edbi d\u00e2y 8 AWG b\u1ecb c\u1ea5m trong \u0111i\u1ec1u ki\u1ec7n n\u00e0y.<\/p>\n<p>N\u1ebfu b\u1ea1n c\u1ea7n m\u1ea1ch 60 A, kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ed3ng 8 AWG cho \u0111i\u1ec1u \u0111\u00f3. V\u1ecb tr\u00ed c\u1ee7a c\u1ea7u dao trong c\u1ea5u h\u00ecnh hai c\u1ef1c v\u00e0 c\u00e1ch n\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a m\u1ea1ch l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi ri\u00eang bi\u1ec7t, v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y trong so s\u00e1nh n\u00e0y c\u1ee7a <a href=\"https:\/\/huyuglobal.com\/vi\/blog\/50-amp-single-pole-breaker-vs-double-pole\/\">c\u1ea7u dao \u0111\u01a1n c\u1ef1c v\u00e0 c\u1ea7u dao hai c\u1ef1c 50 amp<\/a>.<\/p>\n<h2>Gi\u1ea3m d\u00f2ng: Khi 8 AWG kh\u00f4ng c\u00f2n \u0111\u1ee7<\/h2>\n<p>B\u1ea3ng ch\u1ec9 quy \u0111\u1ecbnh t\u1ed1i \u0111a ba d\u00e2y d\u1eabn mang d\u00f2ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng 30 \u00b0C, nh\u01b0ng c\u1ea3 hai gi\u1ea3 \u0111\u1ecbnh n\u00e0y th\u01b0\u1eddng kh\u00f4ng ch\u00ednh x\u00e1c. \u1ede 8 AWG, \u0111i\u1ec1u n\u00e0y t\u1ea1o ra v\u1ea5n \u0111\u1ec1 ngay l\u1eadp t\u1ee9c, v\u00ec kh\u00f4ng c\u00f3 d\u00e2y d\u1eabn nh\u1ecf n\u00e0o c\u00f3 th\u1ec3 c\u1ee9u b\u1ea1n.<\/p>\n<table>\n<tbody>\n<tr>\n<th>T\u00ecnh tr\u1ea1ng<\/th>\n<th>\u0110i\u1ec1u ch\u1ec9nh<\/th>\n<th>K\u1ebft qu\u1ea3 \u0111\u1ed3ng 8 AWG<\/th>\n<\/tr>\n<tr>\n<td>4\u20136 d\u00e2y d\u1eabn mang d\u00f2ng \u0111i\u1ec7n<\/td>\n<td>80%<\/td>\n<td>55 A \u00d7 0.80 = 44 A<\/td>\n<\/tr>\n<tr>\n<td>7\u20139 d\u00e2y d\u1eabn mang d\u00f2ng \u0111i\u1ec7n<\/td>\n<td>70%<\/td>\n<td>55 A \u00d7 0.70 = 38.5 A<\/td>\n<\/tr>\n<tr>\n<td>10\u201320 d\u00e2y d\u1eabn mang d\u00f2ng \u0111i\u1ec7n<\/td>\n<td>50%<\/td>\n<td>55 A \u00d7 0.50 = 27.5 A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>V\u00ed d\u1ee5, khi xem h\u00e0ng \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea3ng, n\u1ebfu ch\u00fang ta ch\u1ea1y b\u1ed1n d\u00e2y \u0111\u1ed3ng 8 AWG THHN qua m\u1ed9t \u1ed1ng PVC, d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c gi\u1ea3m c\u00f2n 44 A. N\u1ebfu so s\u00e1nh v\u1edbi gi\u00e1 tr\u1ecb d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c \u1edf 75\u00b0C l\u00e0 50 A, ta \u0111\u01b0\u1ee3c 44 A, ngh\u0129a l\u00e0 c\u1ea7u dao 40 A c\u1ee7a ch\u00fang ta v\u1eabn ph\u00f9 h\u1ee3p. N\u1ebfu ti\u1ebfp t\u1ee5c th\u00eam d\u00e2y \u0111\u1ec3 t\u1ed5ng s\u1ed1 l\u00ean b\u1ea3y, d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c gi\u1ea3m c\u00f2n 38.5 A. \u1ede giai \u0111o\u1ea1n n\u00e0y, kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng d\u00e2y 8 AWG n\u1eefa v\u00e0 c\u1ea7n chuy\u1ec3n sang d\u00e2y 6 AWG.<\/p>\n<p>Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng l\u00e0m v\u1ea5n \u0111\u1ec1 tr\u1edf n\u00ean nghi\u00eam tr\u1ecdng h\u01a1n. D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c c\u1ee7a d\u00e2y \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh d\u1ef1a tr\u00ean gi\u1ea3 \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng 30 \u00b0C. Trong \u0111i\u1ec1u ki\u1ec7n n\u00f3ng h\u01a1n, c\u00e1c h\u1ec7 s\u1ed1 hi\u1ec7u ch\u1ec9nh \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng. N\u1ebfu c\u00f3 \u1ed1ng d\u1eabn ch\u1ea1y tr\u00ean m\u00e1i trong kh\u00ed h\u1eadu n\u00f3ng, nhi\u1ec7t \u0111\u1ed9 c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn kho\u1ea3ng 50 \u00b0C, v\u00e0 tr\u01b0\u1edbc khi t\u00ednh \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 b\u00f3 d\u00e2y, d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c c\u1ee7a 8 AWG \u0111\u00e3 gi\u1ea3m th\u00eam m\u1ed9t b\u1eadc. Cu\u1ed1i c\u00f9ng, n\u1ebfu c\u00f3 t\u1ea3i li\u00ean t\u1ee5c chi\u1ebfm 125% c\u00f4ng su\u1ea5t d\u00e2y, k\u1ebft qu\u1ea3 t\u00ednh to\u00e1n c\u00f3 th\u1ec3 kh\u00f4ng nh\u01b0 mong \u0111\u1ee3i.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4576\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/10\/when-8-awg-stops-being-enough.webp\" alt=\"khi 8 awg kh\u00f4ng c\u00f2n \u0111\u1ee7\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>S\u1ee5t \u00e1p: H\u1ea1n ch\u1ebf kh\u00f4ng c\u00f2n l\u00e0 l\u00fd thuy\u1ebft<\/h2>\n<p>\u1ede 8 AWG, n\u00ean b\u1eaft \u0111\u1ea7u xem x\u00e9t s\u1ee5t \u00e1p nh\u01b0 m\u1ed9t y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh khi ch\u1ecdn k\u00edch th\u01b0\u1edbc d\u00e2y thay v\u00ec ch\u1ec9 x\u00e1c nh\u1eadn. V\u00ed d\u1ee5, \u0111\u1ed3ng 8 AWG d\u1ea1ng s\u1ee3i c\u00f3 \u0111i\u1ec7n tr\u1edf DC kho\u1ea3ng 0.628 \u03a9\/1000 ft \u1edf nhi\u1ec7t \u0111\u1ed9 75 \u00b0C. \u0110i\u1ec7n tr\u1edf AC c\u00f2n cao h\u01a1n.<\/p>\n<p>B\u00e2y gi\u1edd, m\u1ed9t m\u1ea1ch 240 V mang d\u00f2ng 40 A s\u1ebd cung c\u1ea5p c\u00e1c gi\u00e1 tr\u1ecb sau: v\u1edbi chi\u1ec1u d\u00e0i ch\u1ea1y 100 ft theo m\u1ed9t h\u01b0\u1edbng, \u0111i\u1ec7n \u00e1p s\u1ee5t gi\u1ea3m s\u1ebd kho\u1ea3ng 6,5 V ho\u1eb7c kho\u1ea3ng 2,7%. V\u00ec v\u1eady, t\u1eeb 110 ft tr\u1edf \u0111i b\u1ea1n s\u1ebd \u0111\u1ed1i m\u1eb7t v\u1edbi gi\u1edbi h\u1ea1n t\u1ed1i \u0111a \u0111\u01b0\u1ee3c ph\u00e9p c\u1ee7a NEC v\u00ec gi\u1edbi h\u1ea1n 3% cho m\u1ea1ch nh\u00e1nh \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cao.<\/p>\n<p>Gi\u1edbi h\u1ea1n 3% v\u00e0 5% l\u00e0 c\u00e1c khuy\u1ebfn ngh\u1ecb kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c thi theo ph\u00e1p lu\u1eadt, nh\u01b0ng c\u00e1c khuy\u1ebfn ngh\u1ecb \u0111\u00f3 t\u1ed3n t\u1ea1i v\u00ec m\u1ed9t l\u00fd do. N\u1ebfu \u0111i\u1ec7n \u00e1p \u0111\u1ea1t \u0111\u1ebfn 5%, do \u0111i\u1ec7n \u00e1p th\u1ea5p n\u00e0y, m\u1ed9t \u0111\u1ed9ng c\u01a1 s\u1ebd k\u00e9o d\u00f2ng \u0111i\u1ec7n l\u1edbn h\u01a1n so v\u1edbi \u0111i\u1ec7n \u00e1p b\u00ecnh th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng l\u00e0m n\u00f3ng d\u00e2y d\u1eabn. Th\u00f4ng th\u01b0\u1eddng, m\u1ea1ch 8 AWG \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t s\u1ebd y\u00eau c\u1ea7u d\u00e2y d\u1eabn m\u1ea1nh h\u01a1n \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c kho\u1ea3ng c\u00e1ch. Vi\u1ec7c \u0111\u1ecbnh c\u1ee1 feeder cho m\u1ed9t d\u1ecbch v\u1ee5 l\u1edbn l\u00e0m cho s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i tr\u1edf n\u00ean c\u1ee5 th\u1ec3 theo c\u00f9ng c\u00e1ch, nh\u01b0 h\u01b0\u1edbng d\u1eabn n\u00e0y v\u1ec1 <a href=\"https:\/\/huyuglobal.com\/vi\/blog\/wire-size-for-100-amp-service\/\">\u0111\u1ecbnh c\u1ee1 d\u00e2y cho d\u1ecbch v\u1ee5 100 amp<\/a> tr\u00ecnh b\u00e0y.<\/p>\n<h2>8 AWG Th\u1ef1c S\u1ef1 \u0110\u01b0\u1ee3c S\u1eed D\u1ee5ng Cho Nh\u1eefng G\u00ec<\/h2>\n<p>C\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh t\u1eeb c\u00e1c \u0111\u1ecbnh m\u1ee9c. D\u00e2y \u0111\u1ed3ng 8 AWG cho ph\u00e9p mang d\u00f2ng \u0111i\u1ec7n trong ph\u1ea1m vi 40\u201350 A theo c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00e3 bi\u1ebft, bao g\u1ed3m:<\/p>\n<ul>\n<li>Feeder cho c\u00e1c b\u1ea3ng ph\u1ee5. C\u00e1p 8\/3 k\u1ebft n\u1ed1i b\u1ea3ng ph\u1ee5 k\u00e9o d\u00f2ng \u0111i\u1ec7n 40 ho\u1eb7c 50 A trong gara, v\u00ed d\u1ee5, v\u1edbi \u0111i\u1ec1u ki\u1ec7n t\u1ed5ng t\u1ea3i v\u00e0 kho\u1ea3ng c\u00e1ch k\u1ebft n\u1ed1i kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n;<\/li>\n<li>C\u00e1c \u0111\u01a1n v\u1ecb \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed v\u00e0 b\u01a1m nhi\u1ec7t. Nhi\u1ec1u \u0111\u01a1n v\u1ecb \u0111i\u1ec1u h\u00f2a trung t\u00e2m y\u00eau c\u1ea7u b\u1ea3o v\u1ec7 t\u1ed1i \u0111a ch\u1ed1ng qu\u00e1 d\u00f2ng b\u1eb1ng 40\/50 A;<\/li>\n<li>M\u00e1y n\u01b0\u1edbc n\u00f3ng \u0111i\u1ec7n. M\u00e1y n\u01b0\u1edbc n\u00f3ng b\u1ed3n c\u00f3 c\u00f4ng su\u1ea5t 9 kW v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u1edf 240 volt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c trang b\u1ecb b\u1ed9 gia nhi\u1ec7t s\u1eed d\u1ee5ng d\u00e2y 8\/2 v\u00e0 c\u1ea7u dao \u0111\u1ecbnh m\u1ee9c 40 A.<\/li>\n<li>B\u1ebfp n\u1ea5u v\u00e0 l\u00f2 n\u01b0\u1edbng t\u01b0\u1eddng. C\u00e1c thi\u1ebft b\u1ecb t\u00e1ch r\u1eddi t\u01b0\u01a1ng \u0111\u1ed1i nh\u1ecf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n b\u1eb1ng c\u00e1p 8 AWG, tuy nhi\u00ean, nhi\u1ec1u l\u00f2 n\u01b0\u1edbng hi\u1ec7n nay y\u00eau c\u1ea7u s\u1eed d\u1ee5ng d\u00e2y 6 AWG.<\/li>\n<li>M\u00e1y ph\u00e1t \u0111i\u1ec7n v\u00e0 c\u00f4ng t\u1eafc chuy\u1ec3n m\u1ea1ch. C\u00e1p m\u00e1y ph\u00e1t \u0111i\u1ec7n di \u0111\u1ed9ng 8\/3 SOOW cung c\u1ea5p cho h\u1ed9p \u0111\u1ea7u v\u00e0o 50 A;<\/li>\n<li>S\u1ea1c \u0111i\u1ec7n cho xe EV. M\u1ed9t c\u00f4ng vi\u1ec7c 8 AWG th\u00f4ng th\u01b0\u1eddng l\u00e0 b\u1ed9 s\u1ea1c \u0111\u1ecbnh m\u1ee9c 32 A v\u00e0 s\u1eed d\u1ee5ng c\u1ea7u dao 40 A.<\/li>\n<li>M\u1ea1ch n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi PV. M\u1ea1ch n\u00e0y ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a NEC \u0110i\u1ec1u 690, trong \u0111\u00f3 d\u00e2y 8 AWG THHN ho\u1eb7c lo\u1ea1i PV cho c\u00e1c \u0111o\u1ea1n d\u00e2y ph\u00f9 h\u1ee3p v\u1edbi ngu\u1ed3n v\u00e0 \u0111\u1ea7u ra \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i.<\/li>\n<\/ul>\n<p>L\u01b0u \u00fd r\u1eb1ng h\u1ea7u h\u1ebft c\u00e1c m\u1ea1ch n\u00e0y l\u00e0 m\u1ea1ch d\u00e0nh ri\u00eang cho m\u1ed9t t\u1ea3i \u0111\u01a1n thay v\u00ec m\u1ea1ch \u0111a \u1ed5 c\u1eafm, \u0111i\u1ec1u n\u00e0y kh\u00f4ng ph\u1ea3i ng\u1eabu nhi\u00ean. L\u00fd do cho s\u1ef1 kh\u00e1c bi\u1ec7t trong \u1ee9ng d\u1ee5ng l\u00e0 m\u1ea1ch d\u00e0nh ri\u00eang ch\u1ec9 c\u00f3 m\u1ed9t t\u1ea3i \u0111\u00e3 bi\u1ebft, do \u0111\u00f3 cho ph\u00e9p c\u00e2u tr\u1ea3 l\u1eddi ch\u1eafc ch\u1eafn cho vi\u1ec7c gi\u1ea3m \u0111\u1ecbnh m\u1ee9c v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u1ea7u cu\u1ed1i. Ng\u01b0\u1ee3c l\u1ea1i, m\u1ea1ch \u0111a \u1ed5 c\u1eafm kh\u00f4ng d\u1eabn \u0111\u1ebfn c\u00e2u tr\u1ea3 l\u1eddi ch\u1eafc ch\u1eafn nh\u01b0 v\u1eady v\u00ec l\u00fd do s\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 hai lo\u1ea1i m\u1ea1ch \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh kh\u00e1c nhau b\u1edfi m\u00e3 \u0111i\u1ec7n.<\/p>\n<h2>D\u00e2y d\u1eabn n\u1ed1i \u0111\u1ea5t v\u00e0 c\u1ea5u h\u00ecnh c\u00e1p<\/h2>\n<p>D\u00e2y d\u1eabn n\u1ed1i \u0111\u1ea5t thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi \u0111\u1ecbnh m\u1ee9c c\u1ee7a thi\u1ebft b\u1ecb qu\u00e1 d\u00f2ng thay v\u00ec c\u00e1c d\u00e2y d\u1eabn kh\u00f4ng n\u1ed1i \u0111\u1ea5t. \u0110\u1ed1i v\u1edbi m\u1ea1ch c\u00f3 \u0111\u1ecbnh m\u1ee9c 40 ho\u1eb7c 50 A, b\u1ea3ng 250.122 khuy\u00ean d\u00f9ng d\u00e2y \u0111\u1ed3ng 10 AWG. D\u00e2y d\u1eabn kh\u00f4ng c\u1ea7n ph\u1ea3i t\u01b0\u01a1ng \u1ee9ng v\u1edbi k\u00edch th\u01b0\u1edbc d\u00e2y n\u00f3ng, do \u0111\u00f3, kh\u00f4ng c\u1ea7n thi\u1ebft ph\u1ea3i t\u0103ng k\u00edch th\u01b0\u1edbc d\u00e2y n\u1ed1i \u0111\u1ea5t ch\u1ec9 v\u00ec d\u00e2y d\u1eabn n\u00f3ng l\u1edbn h\u01a1n.<\/p>\n<table>\n<tbody>\n<tr>\n<th>C\u1ea5u H\u00ecnh<\/th>\n<th>D\u00e2y d\u1eabn<\/th>\n<th>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th>\n<\/tr>\n<tr>\n<td>8\/2<\/td>\n<td>D\u00e2y n\u00f3ng, d\u00e2y trung t\u00ednh, d\u00e2y n\u1ed1i \u0111\u1ea5t<\/td>\n<td>M\u00e1y n\u01b0\u1edbc n\u00f3ng, t\u1ea3i 240 V kh\u00f4ng y\u00eau c\u1ea7u d\u00e2y trung t\u00ednh<\/td>\n<\/tr>\n<tr>\n<td>8\/3<\/td>\n<td>Hai d\u00e2y n\u00f3ng, d\u00e2y trung t\u00ednh, d\u00e2y n\u1ed1i \u0111\u1ea5t<\/td>\n<td>C\u1ea5p ngu\u1ed3n ph\u1ee5, t\u1ea3i h\u1ed7n h\u1ee3p 120\/240 V, \u0111\u1ea7u v\u00e0o m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/td>\n<\/tr>\n<tr>\n<td>8\/4<\/td>\n<td>Ba d\u00e2y n\u00f3ng, d\u00e2y trung t\u00ednh, d\u00e2y n\u1ed1i \u0111\u1ea5t ho\u1eb7c b\u1ed1n d\u00e2y cho c\u00f4ng vi\u1ec7c ba pha<\/td>\n<td>Thi\u1ebft b\u1ecb ba pha v\u00e0 c\u00e1c b\u1ed9 c\u1ea5p chuy\u00ean d\u1ee5ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>S\u1ed1 li\u1ec7u theo sau d\u1ea5u g\u1ea1ch ch\u00e9o ch\u1ec9 s\u1ed1 l\u01b0\u1ee3ng d\u00e2y d\u1eabn mang d\u00f2ng \u0111i\u1ec7n, kh\u00f4ng ph\u1ea3i d\u00e2y n\u1ed1i \u0111\u1ea5t. Do \u0111\u00f3, s\u1ed1 d\u00e2y s\u1eed d\u1ee5ng trong c\u00e1p 8\/2 l\u00e0 ba. Vi\u1ec7c bi\u1ebft li\u1ec7u t\u1ea3i c\u00f3 y\u00eau c\u1ea7u d\u00e2y trung t\u00ednh hay kh\u00f4ng l\u00e0 r\u1ea5t quan tr\u1ecdng khi x\u00e1c \u0111\u1ecbnh c\u1ea5u h\u00ecnh c\u00e1p cho b\u1ea3ng ph\u1ee5 \u0111\u00f3, v\u00ec \u0111i\u1ec1u n\u00e0y s\u1ebd quy\u1ebft \u0111\u1ecbnh li\u1ec7u n\u00f3 c\u00f3 ho\u1ea1t \u0111\u1ed9ng cho c\u00e1c m\u1ea1ch 120 volt hay kh\u00f4ng.<\/p>\n<h2>Ph\u01b0\u01a1ng ph\u00e1p n\u0103m b\u01b0\u1edbc cho b\u1ea5t k\u1ef3 c\u00f4ng vi\u1ec7c 8 AWG n\u00e0o<\/h2>\n<ul>\n<li>X\u00e1c \u0111\u1ecbnh \u0111\u1ecbnh m\u1ee9c th\u1ea5p nh\u1ea5t c\u1ee7a c\u00e1c \u0111\u1ea7u n\u1ed1i trong m\u1ea1ch. C\u00e1c l\u1ef1a ch\u1ecdn l\u00e0 nh\u00e3n c\u1ee7a c\u1ea7u dao, danh s\u00e1ch c\u1ee7a b\u1ea3ng \u0111i\u1ec7n v\u00e0 b\u1ea3ng t\u00ean c\u1ee7a thi\u1ebft b\u1ecb. \u0110\u00e2y s\u1ebd l\u00e0 c\u1ed9t \u0111\u1ec3 s\u1eed d\u1ee5ng.<\/li>\n<li>Sau \u0111\u00f3, b\u1ea1n ph\u1ea3i x\u00e1c \u0111\u1ecbnh lo\u1ea1i c\u00e1p ho\u1eb7c d\u00e2y d\u1eabn. N\u1ebfu b\u1ea5t k\u1ef3 lo\u1ea1i n\u00e0o trong s\u1ed1 n\u00e0y l\u00e0 NM-B, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 d\u00f2ng \u0111i\u1ec7n gi\u1ea3m xu\u1ed1ng c\u1ed9t 60 \u0111\u1ed9 C m\u1eb7c d\u00f9 \u0111\u1ecbnh m\u1ee9c c\u1ee7a c\u00e1c \u0111\u1ea7u n\u1ed1i.<\/li>\n<li>Ti\u1ebfp t\u1ee5c v\u1edbi gi\u00e1 tr\u1ecb 90 \u0111\u1ed9 C \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh. N\u00f3 b\u1eb1ng 55 ampe cho \u0111\u1ed3ng v\u00e0 45 ampe cho nh\u00f4m. Ngo\u00e0i ra, \u0111\u1eebng qu\u00ean \u00e1p d\u1ee5ng c\u00e1c h\u1ec7 s\u1ed1 hi\u1ec7u ch\u1ec9nh, bao g\u1ed3m h\u1ec7 s\u1ed1 s\u1ed1 l\u01b0\u1ee3ng d\u00e2y d\u1eabn v\u00e0 h\u1ec7 s\u1ed1 hi\u1ec7u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng.<\/li>\n<li>Ch\u1ecdn gi\u00e1 tr\u1ecb nh\u1ecf nh\u1ea5t trong s\u1ed1 gi\u00e1 tr\u1ecb \u0111\u00e3 hi\u1ec7u ch\u1ec9nh v\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a \u0111\u1ea7u n\u1ed1i, \u0111\u00f3 l\u00e0 ampacity th\u1ef1c t\u1ebf.<\/li>\n<li>B\u00e2y gi\u1edd x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ea7u dao d\u1ef1a tr\u00ean gi\u00e1 tr\u1ecb \u0111\u00f3 b\u1eb1ng c\u00e1ch ch\u1ecdn k\u00edch th\u01b0\u1edbc nh\u1ecf nh\u1ea5t \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp trong 240.4(B), nh\u1edb r\u1eb1ng 240.4(D) kh\u00f4ng \u00e1p d\u1ee5ng cho 8 AWG v\u00e0 240.4(B) kh\u00f4ng \u00e1p d\u1ee5ng cho c\u00e1c m\u1ea1ch \u1ed5 c\u1eafm \u0111a \u0111i\u1ec3m.<\/li>\n<\/ul>\n<p>\u0110\u1ea3m b\u1ea3o ki\u1ec3m tra s\u1ee5t \u00e1p tr\u00ean chi\u1ec1u d\u00e0i th\u1ef1c t\u1ebf c\u1ee7a \u0111o\u1ea1n d\u00e2y v\u00e0 t\u0103ng k\u00edch th\u01b0\u1edbc n\u1ebfu c\u1ea7n c\u1ea3i thi\u1ec7n d\u00e2y d\u1eabn. N\u1ebfu c\u00f3 thay \u0111\u1ed5i \u1edf \u0111i\u1ec3m s\u1ed1 n\u0103m, th\u00ec d\u00e2y d\u1eabn c\u1ea7n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n l\u1ea1i, trong khi c\u00e1c ph\u00e9p t\u00ednh kh\u00e1c v\u1eabn gi\u1eef nguy\u00ean.<\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>M\u1ed9t d\u00e2y 8 AWG c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c bao nhi\u00eau ampe?<\/h3>\n<p>D\u00e2y \u0111\u1ed3ng 8 AWG c\u00f3 kh\u1ea3 n\u0103ng mang d\u00f2ng \u0111i\u1ec7n 40 A \u1edf nhi\u1ec7t \u0111\u1ed9 60\u00b0C, 50 A \u1edf nhi\u1ec7t \u0111\u1ed9 75\u00b0C v\u00e0 55 A \u1edf nhi\u1ec7t \u0111\u1ed9 90\u00b0C theo B\u1ea3ng NEC 310.16. D\u00e2y nh\u00f4m 8 AWG s\u1ebd mang 30 A \u1edf nhi\u1ec7t \u0111\u1ed9 60\u00b0C, 40 A \u1edf 75\u00b0C v\u00e0 45 A \u1edf 90\u00b0C, nh\u01b0ng n\u00f3 s\u1ebd kh\u00f4ng mang \u0111\u01b0\u1ee3c d\u00f2ng \u0111i\u1ec7n cao nh\u1ea5t c\u00f3 th\u1ec3 cho ba nhi\u1ec7t \u0111\u1ed9 \u0111\u00e3 cho. Y\u1ebfu t\u1ed1 gi\u1edbi h\u1ea1n trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p \u0111\u00f3 l\u00e0 d\u00f2ng \u0111i\u1ec7n th\u1ea5p nh\u1ea5t x\u00e9t \u0111\u1ebfn ph\u01b0\u01a1ng ph\u00e1p k\u1ebft n\u1ed1i, v\u1eadt li\u1ec7u c\u00e1p v\u00e0 gi\u00e1 tr\u1ecb gi\u1ea3m d\u00f2ng; trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, gi\u00e1 tr\u1ecb n\u00e0y th\u01b0\u1eddng kho\u1ea3ng 40 A khi s\u1eed d\u1ee5ng c\u00e1p nh\u00f4m NM-B v\u00e0 kho\u1ea3ng 50 A khi s\u1eed d\u1ee5ng l\u1eafp \u0111\u1eb7t \u1ed1ng d\u1eabn ho\u1ea1t \u0111\u1ed9ng \u1edf 75\u00b0C.<\/p>\n<h3>8 AWG c\u00f3 ph\u00f9 h\u1ee3p cho d\u00f2ng 40 ampe kh\u00f4ng?<\/h3>\n<p>Th\u1eadt v\u1eady, \u0111\u00e2y l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh th\u1eadn tr\u1ecdng. \u0110\u00e1nh gi\u00e1 c\u1ee7a \u0111\u1ed3ng \u1edf nhi\u1ec7t \u0111\u1ed9 60 \u0111\u1ed9 C l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1p NM-B li\u00ean quan \u0111\u1ebfn tu\u00e2n th\u1ee7, \u0111i\u1ec1u n\u00e0y trong tr\u01b0\u1eddng h\u1ee3p m\u1ea1ch NM-B \u0111\u1ed3ng 8 AWG \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n b\u1edfi b\u1ed9 ng\u1eaft m\u1ea1ch 40 ampe l\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o. Ph\u1ea7n l\u1edbn, \u0111\u00e2y l\u00e0 c\u00e1ch \u0111\u00e1nh gi\u00e1 c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb HVAC gia \u0111\u00ecnh kh\u00e1c nhau.<\/p>\n<h3>8 AWG c\u00f3 mang \u0111\u01b0\u1ee3c 60 ampe kh\u00f4ng?<\/h3>\n<p>Khi x\u1eed l\u00fd c\u00e1c l\u1eafp \u0111\u1eb7t ti\u00eau chu\u1ea9n, d\u00e2y \u0111\u1ed3ng 8 AWG s\u1ebd kh\u00f4ng mang \u0111\u01b0\u1ee3c h\u01a1n 55 A ngay c\u1ea3 \u1edf nhi\u1ec7t \u0111\u1ed9 90 \u00b0C, v\u00e0 v\u00ec v\u1eady con s\u1ed1 \u0111\u00f3 \u00e1p d\u1ee5ng cho vi\u1ec7c gi\u1ea3m d\u00f2ng c\u1ee7a d\u00e2y, thay v\u00ec kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i \u0111\u1ea7u cu\u1ed1i c\u1ee7a n\u00f3. \u0110\u1ec3 c\u00f3 d\u00f2ng 60 A, c\u1ea7n m\u1ed9t d\u00e2y 6 AWG, v\u1edbi kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i \u0111\u1ea7u cu\u1ed1i l\u00e0 65 A \u1edf 75 \u00b0C. Do \u0111\u00f3, tuy\u00ean b\u1ed1 r\u1eb1ng 8 AWG c\u00f3 th\u1ec3 mang d\u00f2ng 60 A d\u1ef1a tr\u00ean c\u1ed9t sai ho\u1eb7c b\u1ecf qua 110.14(C).<\/p>\n<h3>8 AWG c\u00f3 x\u1eed l\u00fd \u0111\u01b0\u1ee3c d\u00f2ng 50 ampe kh\u00f4ng?<\/h3>\n<p>\u0110i\u1ec1u n\u00e0y \u0111\u00fang trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p \u0111\u00e1nh gi\u00e1 k\u1ebft n\u1ed1i l\u00e0 75 \u00b0C v\u00e0 d\u00e2y d\u1eabn kh\u00f4ng ph\u1ea3i NM-B. B\u1ea3ng 310.16 ch\u1ec9 ra r\u1eb1ng \u0111\u00e1nh gi\u00e1 l\u00e0 50 A \u1edf 75 \u00b0C cho \u0111\u1ed3ng 8 AWG, t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111\u00e1nh gi\u00e1 thi\u1ebft b\u1ecb qu\u00e1 d\u00f2ng ti\u00eau chu\u1ea9n. V\u00ec 8 AWG l\u1edbn h\u01a1n gi\u1edbi h\u1ea1n quy \u0111\u1ecbnh trong quy t\u1eafc d\u00e2y d\u1eabn nh\u1ecf t\u1ea1i 240.4(D), n\u00ean \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng b\u1ed9 ng\u1eaft m\u1ea1ch 50 A theo 240.4(B mi\u1ec5n l\u00e0 \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ea1ch nh\u00e1nh \u0111a \u1ed5 c\u1eafm cung c\u1ea5p \u1ed5 c\u1eafm. Lu\u00f4n ki\u1ec3m tra nh\u00e3n b\u1ed9 ng\u1eaft v\u00e0 b\u1ea3ng \u0111i\u1ec7n tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng.<\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ol>\n<li><a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-70-standard-development\/70\" rel=\"nofollow noopener\" target=\"_blank\">NFPA \u2014 NFPA 70 National Electrical Code, B\u1ea3ng 310.16, 250.122 v\u00e0 310.15(C)(1), v\u00e0 M\u1ee5c 110.14(C), 240.4 v\u00e0 690.8<\/a><\/li>\n<li><a href=\"https:\/\/www.southwire.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Southwire \u2014 d\u1eef li\u1ec7u ampacity d\u00e2y d\u1eabn, \u0111i\u1ec7n tr\u1edf v\u00e0 c\u1ea5u t\u1ea1o c\u00e1p cho d\u00e2y x\u00e2y d\u1ef1ng<\/a><\/li>\n<li><a href=\"https:\/\/www.ecmweb.com\/\" rel=\"nofollow noopener\" target=\"_blank\">EC&amp;M Magazine \u2014 \u0111i\u1ec1u ch\u1ec9nh ampacity, h\u1ec7 s\u1ed1 hi\u1ec7u ch\u1ec9nh v\u00e0 h\u01b0\u1edbng d\u1eabn nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea7u cu\u1ed1i<\/a><\/li>\n<li><a href=\"https:\/\/www.iaei.org\/\" rel=\"nofollow noopener\" target=\"_blank\">International Association of Electrical Inspectors \u2014 gi\u1ea3i th\u00edch m\u00e3 v\u1ec1 k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn v\u00e0 b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng<\/a><\/li>\n<li><a href=\"https:\/\/www.nema.org\/\" rel=\"nofollow noopener\" target=\"_blank\">NEMA \u2014 ti\u00eau chu\u1ea9n d\u00e2y v\u00e0 c\u00e1p x\u00e2y d\u1ef1ng, v\u00e0 th\u1ef1c h\u00e0nh \u0111\u00e1nh gi\u00e1 nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea7u cu\u1ed1i<\/a><\/li>\n<li><a href=\"https:\/\/www.grainger.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Grainger \u2014 d\u1eef li\u1ec7u gi\u00e1 v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt hi\u1ec7n t\u1ea1i c\u1ee7a M\u1ef9 cho d\u00e2y v\u00e0 b\u1ed9 c\u00e1p x\u00e2y d\u1ef1ng 8 AWG<\/a><\/li>\n<li><a href=\"https:\/\/www.eaton.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Eaton \u2014 \u0111\u00e1nh gi\u00e1 \u0111\u1ea7u cu\u1ed1i b\u1ed9 ng\u1eaft m\u1ea1ch v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt k\u1ebft n\u1ed1i b\u1ea3ng \u0111i\u1ec7n<\/a><\/li>\n<li><a href=\"https:\/\/www.energy.gov\/\" rel=\"nofollow noopener\" target=\"_blank\">B\u1ed9 N\u0103ng l\u01b0\u1ee3ng Hoa K\u1ef3 \u2014 h\u01b0\u1edbng d\u1eabn \u0111i d\u00e2y d\u00e2n d\u1ee5ng v\u00e0 t\u1ea3i \u0111i\u1ec7n<\/a><\/li>\n<\/ol>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>D\u00e2y 8 AWG \u0111\u00e1p \u1ee9ng ba m\u1ee9c ampacity, v\u00ec n\u00f3 ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a ba lo\u1ea1i c\u00e1ch nhi\u1ec7t nhi\u1ec7t kh\u00e1c nhau, ngh\u0129a l\u00e0 m\u1ee9c ampacity s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi \u0111i\u1ec3m k\u1ebft th\u00fac y\u1ebfu nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ea1ch v\u00e0 lo\u1ea1i d\u00e2y. Khi s\u1eed d\u1ee5ng \u0111\u1ed3ng, c\u00e1c m\u1ee9c ampacity s\u1ebd l\u00e0 40 A \u1edf 60 C, 50 A \u1edf 75 C v\u00e0 55 A \u1edf 90 C trong khi v\u1edbi d\u00e2y nh\u00f4m, c\u00e1c m\u1ee9c n\u00e0y l\u00e0 30 A \u1edf 60 C, 40 A \u1edf 75 C v\u00e0 45 A \u1edf 90 C, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 m\u1ee9c ampacity c\u1ee7a d\u00e2y 8 AWG s\u1eed d\u1ee5ng trong c\u00e1p NM-B l\u00e0 40 A, trong khi \u0111\u1ed1i v\u1edbi vi\u1ec7c \u0111i d\u00e2y b\u1eb1ng \u1ed1ng d\u1eabn l\u00e0 50 A \u1edf \u0111i\u1ec3m k\u1ebft th\u00fac 75 \u0111\u1ed9. Tr\u01b0\u1edbc ti\u00ean, c\u1ea7n ki\u1ec3m tra c\u00e1c m\u1ee9c \u0111\u00e1nh gi\u00e1 \u0111\u1ea7u cu\u1ed1i tr\u01b0\u1edbc khi x\u1eed l\u00fd ampacity c\u1ee7a \u0111o\u1ea1n d\u00e2y, do \u0111\u00f3 c\u1ea7n l\u1eb7p l\u1ea1i ba b\u01b0\u1edbc sau \u0111\u00e2y l\u1ea7n l\u01b0\u1ee3t.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>If you look for 8 AWG wire ampacity on the internet you will often find such answers as 40, 50 or 55 amps. These statements match as people refer to the same table and understand it correctly. The difference lies in other aspects which are not connected with copper such as the rating of insulation, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4572,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-4571","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/4571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/comments?post=4571"}],"version-history":[{"count":3,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/4571\/revisions"}],"predecessor-version":[{"id":4578,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/4571\/revisions\/4578"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media\/4572"}],"wp:attachment":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media?parent=4571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/categories?post=4571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/tags?post=4571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}